fn main() {
    let score = 85;
    if score > 100 {
        println!("Illegal score: {}", score);
    } else if score >= 90 {
        println!("Your score {} is Good!", score);
    } else if score >= 80 {
        println!("Your score {} is not so bad.", score);
    } else if score >= 70 {
        println!("Your score {} is normal.", score);
    } else if score >= 60 {
        println!("Your score {} reaches the line.", score);
    } else {
        println!("Sorry, you need learn with {}", score);
    }

    let condition = true;
    let num = if condition {
        5
    } else {
        6
    };
    println!("Num is {}", num);
}
